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Taiwan’s geography makes it ideal for wind and ocean energy. With rising energy demand, horizontal-axis wind turbines (HAWTs) have become mainstream due to cost reductions. This study uses numerical simulations to examine the hub region of the NREL 5 MW offshore turbine, aiming to improve hub design for better aerodynamic performance. Using the steady-state k-ω SST model, results are validated and compared across conventional, hub-less, and egg-shaped hub cases. The streamlined hub delays flow separation and reduces vortex intensity, enhancing efficiency and power output. The study supports offshore wind technology development and renewable energy use.

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Numerical Simulation Study on the Flow Field in the Blade Root Region for Wind Turbine Hub Design

  • 会议论文

  • 发表日期：

    2026年

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  • Yu-Tso Li,
  • Pei- Hsin Kuo

摘要

Taiwan’s geography makes it ideal for wind and ocean energy. With rising energy demand, horizontal-axis wind turbines (HAWTs) have become mainstream due to cost reductions. This study uses numerical simulations to examine the hub region of the NREL 5 MW offshore turbine, aiming to improve hub design for better aerodynamic performance. Using the steady-state k-ω SST model, results are validated and compared across conventional, hub-less, and egg-shaped hub cases. The streamlined hub delays flow separation and reduces vortex intensity, enhancing efficiency and power output. The study supports offshore wind technology development and renewable energy use.